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718e3744 | 1 | /* |
2 | * OSPF Interface functions. | |
3 | * Copyright (C) 1999, 2000 Toshiaki Takada | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
896014f4 | 6 | * |
718e3744 | 7 | * GNU Zebra is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published | |
9 | * by the Free Software Foundation; either version 2, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
896014f4 DL |
17 | * You should have received a copy of the GNU General Public License along |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
718e3744 | 20 | */ |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include "thread.h" | |
25 | #include "linklist.h" | |
26 | #include "prefix.h" | |
27 | #include "if.h" | |
28 | #include "table.h" | |
29 | #include "memory.h" | |
30 | #include "command.h" | |
31 | #include "stream.h" | |
32 | #include "log.h" | |
c0325cfa | 33 | #include "zclient.h" |
7f342629 | 34 | #include "bfd.h" |
718e3744 | 35 | |
68980084 | 36 | #include "ospfd/ospfd.h" |
718e3744 | 37 | #include "ospfd/ospf_spf.h" |
38 | #include "ospfd/ospf_interface.h" | |
39 | #include "ospfd/ospf_ism.h" | |
40 | #include "ospfd/ospf_asbr.h" | |
41 | #include "ospfd/ospf_lsa.h" | |
42 | #include "ospfd/ospf_lsdb.h" | |
43 | #include "ospfd/ospf_neighbor.h" | |
44 | #include "ospfd/ospf_nsm.h" | |
45 | #include "ospfd/ospf_packet.h" | |
46 | #include "ospfd/ospf_abr.h" | |
718e3744 | 47 | #include "ospfd/ospf_network.h" |
48 | #include "ospfd/ospf_dump.h" | |
718e3744 | 49 | |
ae19c240 | 50 | DEFINE_QOBJ_TYPE(ospf_interface) |
d62a17ae | 51 | DEFINE_HOOK(ospf_vl_add, (struct ospf_vl_data * vd), (vd)) |
52 | DEFINE_HOOK(ospf_vl_delete, (struct ospf_vl_data * vd), (vd)) | |
6b0655a2 | 53 | |
2bc7673f CS |
54 | int ospf_interface_neighbor_count(struct ospf_interface *oi) |
55 | { | |
56 | int count = 0; | |
57 | struct route_node *rn; | |
58 | struct ospf_neighbor *nbr = NULL; | |
59 | ||
60 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) { | |
61 | nbr = rn->info; | |
62 | if (nbr) { | |
63 | /* Do not show myself. */ | |
64 | if (nbr == oi->nbr_self) | |
65 | continue; | |
66 | /* Down state is not shown. */ | |
67 | if (nbr->state == NSM_Down) | |
68 | continue; | |
69 | count++; | |
70 | } | |
71 | } | |
72 | ||
73 | return count; | |
74 | } | |
75 | ||
d62a17ae | 76 | int ospf_if_get_output_cost(struct ospf_interface *oi) |
718e3744 | 77 | { |
d62a17ae | 78 | /* If all else fails, use default OSPF cost */ |
d7c0a89a QY |
79 | uint32_t cost; |
80 | uint32_t bw, refbw; | |
d62a17ae | 81 | |
82 | /* ifp speed and bw can be 0 in some platforms, use ospf default bw | |
83 | if bw is configured under interface it would be used. | |
84 | */ | |
85 | if (!oi->ifp->bandwidth && oi->ifp->speed) | |
86 | bw = oi->ifp->speed; | |
87 | else | |
88 | bw = oi->ifp->bandwidth ? oi->ifp->bandwidth | |
89 | : OSPF_DEFAULT_BANDWIDTH; | |
90 | refbw = oi->ospf->ref_bandwidth; | |
91 | ||
92 | /* A specifed ip ospf cost overrides a calculated one. */ | |
93 | if (OSPF_IF_PARAM_CONFIGURED(IF_DEF_PARAMS(oi->ifp), output_cost_cmd) | |
94 | || OSPF_IF_PARAM_CONFIGURED(oi->params, output_cost_cmd)) | |
95 | cost = OSPF_IF_PARAM(oi, output_cost_cmd); | |
96 | /* See if a cost can be calculated from the zebra processes | |
97 | interface bandwidth field. */ | |
98 | else { | |
d7c0a89a | 99 | cost = (uint32_t)((double)refbw / (double)bw + (double)0.5); |
d62a17ae | 100 | if (cost < 1) |
101 | cost = 1; | |
102 | else if (cost > 65535) | |
103 | cost = 65535; | |
104 | } | |
105 | ||
106 | return cost; | |
718e3744 | 107 | } |
108 | ||
d62a17ae | 109 | void ospf_if_recalculate_output_cost(struct interface *ifp) |
718e3744 | 110 | { |
d7c0a89a | 111 | uint32_t newcost; |
d62a17ae | 112 | struct route_node *rn; |
113 | ||
114 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
115 | struct ospf_interface *oi; | |
116 | ||
117 | if ((oi = rn->info) == NULL) | |
118 | continue; | |
119 | ||
120 | newcost = ospf_if_get_output_cost(oi); | |
121 | ||
122 | /* Is actual output cost changed? */ | |
123 | if (oi->output_cost != newcost) { | |
124 | oi->output_cost = newcost; | |
125 | ospf_router_lsa_update_area(oi->area); | |
126 | } | |
718e3744 | 127 | } |
718e3744 | 128 | } |
129 | ||
d62a17ae | 130 | /* Simulate down/up on the interface. This is needed, for example, when |
a608bbf2 | 131 | the MTU changes. */ |
d62a17ae | 132 | void ospf_if_reset(struct interface *ifp) |
a608bbf2 | 133 | { |
d62a17ae | 134 | struct route_node *rn; |
135 | ||
136 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
137 | struct ospf_interface *oi; | |
138 | ||
139 | if ((oi = rn->info) == NULL) | |
140 | continue; | |
141 | ||
142 | ospf_if_down(oi); | |
143 | ospf_if_up(oi); | |
144 | } | |
a608bbf2 | 145 | } |
146 | ||
d62a17ae | 147 | void ospf_if_reset_variables(struct ospf_interface *oi) |
718e3744 | 148 | { |
d62a17ae | 149 | /* Set default values. */ |
150 | /* don't clear this flag. oi->flag = OSPF_IF_DISABLE; */ | |
718e3744 | 151 | |
d62a17ae | 152 | if (oi->vl_data) |
153 | oi->type = OSPF_IFTYPE_VIRTUALLINK; | |
154 | else | |
155 | /* preserve network-type */ | |
156 | if (oi->type != OSPF_IFTYPE_NBMA) | |
157 | oi->type = OSPF_IFTYPE_BROADCAST; | |
718e3744 | 158 | |
d62a17ae | 159 | oi->state = ISM_Down; |
718e3744 | 160 | |
d62a17ae | 161 | oi->crypt_seqnum = 0; |
718e3744 | 162 | |
d62a17ae | 163 | /* This must be short, (less than RxmtInterval) |
164 | - RFC 2328 Section 13.5 para 3. Set to 1 second to avoid Acks being | |
165 | held back for too long - MAG */ | |
166 | oi->v_ls_ack = 1; | |
718e3744 | 167 | } |
168 | ||
20916fba | 169 | /* lookup oi for specified prefix/ifp */ |
d62a17ae | 170 | struct ospf_interface *ospf_if_table_lookup(struct interface *ifp, |
171 | struct prefix *prefix) | |
20916fba | 172 | { |
d62a17ae | 173 | struct prefix p; |
174 | struct route_node *rn; | |
175 | struct ospf_interface *rninfo = NULL; | |
176 | ||
177 | p = *prefix; | |
178 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
179 | ||
180 | /* route_node_get implicitely locks */ | |
181 | if ((rn = route_node_lookup(IF_OIFS(ifp), &p))) { | |
182 | rninfo = (struct ospf_interface *)rn->info; | |
183 | route_unlock_node(rn); | |
184 | } | |
185 | ||
186 | return rninfo; | |
20916fba | 187 | } |
188 | ||
d62a17ae | 189 | static void ospf_add_to_if(struct interface *ifp, struct ospf_interface *oi) |
718e3744 | 190 | { |
d62a17ae | 191 | struct route_node *rn; |
192 | struct prefix p; | |
193 | ||
194 | p = *oi->address; | |
195 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
a6435618 | 196 | apply_mask(&p); |
d62a17ae | 197 | |
198 | rn = route_node_get(IF_OIFS(ifp), &p); | |
199 | /* rn->info should either be NULL or equal to this oi | |
200 | * as route_node_get may return an existing node | |
201 | */ | |
202 | assert(!rn->info || rn->info == oi); | |
203 | rn->info = oi; | |
718e3744 | 204 | } |
205 | ||
d62a17ae | 206 | static void ospf_delete_from_if(struct interface *ifp, |
207 | struct ospf_interface *oi) | |
718e3744 | 208 | { |
d62a17ae | 209 | struct route_node *rn; |
210 | struct prefix p; | |
211 | ||
212 | p = *oi->address; | |
213 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
214 | ||
215 | rn = route_node_lookup(IF_OIFS(oi->ifp), &p); | |
216 | assert(rn); | |
217 | assert(rn->info); | |
218 | rn->info = NULL; | |
219 | route_unlock_node(rn); | |
220 | route_unlock_node(rn); | |
718e3744 | 221 | } |
222 | ||
d62a17ae | 223 | struct ospf_interface *ospf_if_new(struct ospf *ospf, struct interface *ifp, |
224 | struct prefix *p) | |
718e3744 | 225 | { |
d62a17ae | 226 | struct ospf_interface *oi; |
227 | ||
228 | if ((oi = ospf_if_table_lookup(ifp, p)) == NULL) { | |
229 | oi = XCALLOC(MTYPE_OSPF_IF, sizeof(struct ospf_interface)); | |
230 | memset(oi, 0, sizeof(struct ospf_interface)); | |
231 | } else | |
232 | return oi; | |
233 | ||
234 | /* Set zebra interface pointer. */ | |
235 | oi->ifp = ifp; | |
236 | oi->address = p; | |
237 | ||
238 | ospf_add_to_if(ifp, oi); | |
239 | listnode_add(ospf->oiflist, oi); | |
240 | ||
241 | /* Initialize neighbor list. */ | |
242 | oi->nbrs = route_table_init(); | |
243 | ||
244 | /* Initialize static neighbor list. */ | |
245 | oi->nbr_nbma = list_new(); | |
246 | ||
247 | /* Initialize Link State Acknowledgment list. */ | |
248 | oi->ls_ack = list_new(); | |
249 | oi->ls_ack_direct.ls_ack = list_new(); | |
250 | ||
251 | /* Set default values. */ | |
252 | ospf_if_reset_variables(oi); | |
253 | ||
254 | /* Set pseudo neighbor to Null */ | |
255 | oi->nbr_self = NULL; | |
256 | ||
257 | oi->ls_upd_queue = route_table_init(); | |
258 | oi->t_ls_upd_event = NULL; | |
259 | oi->t_ls_ack_direct = NULL; | |
260 | ||
261 | oi->crypt_seqnum = time(NULL); | |
262 | ||
263 | ospf_opaque_type9_lsa_init(oi); | |
264 | ||
265 | oi->ospf = ospf; | |
4fc8a852 CS |
266 | |
267 | ospf_if_stream_set(oi); | |
268 | ||
d62a17ae | 269 | QOBJ_REG(oi, ospf_interface); |
270 | ||
b5a8894d CS |
271 | if (IS_DEBUG_OSPF_EVENT) |
272 | zlog_debug("%s: ospf interface %s vrf %s id %u created", | |
273 | __PRETTY_FUNCTION__, ifp->name, | |
274 | ospf_vrf_id_to_name(ospf->vrf_id), ospf->vrf_id); | |
275 | ||
d62a17ae | 276 | return oi; |
718e3744 | 277 | } |
278 | ||
279 | /* Restore an interface to its pre UP state | |
280 | Used from ism_interface_down only */ | |
d62a17ae | 281 | void ospf_if_cleanup(struct ospf_interface *oi) |
718e3744 | 282 | { |
d62a17ae | 283 | struct route_node *rn; |
284 | struct listnode *node, *nnode; | |
285 | struct ospf_neighbor *nbr; | |
286 | struct ospf_nbr_nbma *nbr_nbma; | |
287 | struct ospf_lsa *lsa; | |
288 | ||
289 | /* oi->nbrs and oi->nbr_nbma should be deleted on InterfaceDown event */ | |
290 | /* delete all static neighbors attached to this interface */ | |
291 | for (ALL_LIST_ELEMENTS(oi->nbr_nbma, node, nnode, nbr_nbma)) { | |
292 | OSPF_POLL_TIMER_OFF(nbr_nbma->t_poll); | |
293 | ||
294 | if (nbr_nbma->nbr) { | |
295 | nbr_nbma->nbr->nbr_nbma = NULL; | |
296 | nbr_nbma->nbr = NULL; | |
297 | } | |
298 | ||
299 | nbr_nbma->oi = NULL; | |
300 | ||
301 | listnode_delete(oi->nbr_nbma, nbr_nbma); | |
718e3744 | 302 | } |
303 | ||
d62a17ae | 304 | /* send Neighbor event KillNbr to all associated neighbors. */ |
305 | for (rn = route_top(oi->nbrs); rn; rn = route_next(rn)) | |
306 | if ((nbr = rn->info) != NULL) | |
307 | if (nbr != oi->nbr_self) | |
308 | OSPF_NSM_EVENT_EXECUTE(nbr, NSM_KillNbr); | |
309 | ||
310 | /* Cleanup Link State Acknowlegdment list. */ | |
311 | for (ALL_LIST_ELEMENTS(oi->ls_ack, node, nnode, lsa)) | |
312 | ospf_lsa_unlock(&lsa); /* oi->ls_ack */ | |
313 | list_delete_all_node(oi->ls_ack); | |
314 | ||
315 | oi->crypt_seqnum = 0; | |
316 | ||
317 | /* Empty link state update queue */ | |
318 | ospf_ls_upd_queue_empty(oi); | |
319 | ||
320 | /* Reset pseudo neighbor. */ | |
321 | ospf_nbr_self_reset(oi, oi->ospf->router_id); | |
718e3744 | 322 | } |
323 | ||
d62a17ae | 324 | void ospf_if_free(struct ospf_interface *oi) |
718e3744 | 325 | { |
d62a17ae | 326 | ospf_if_down(oi); |
327 | ||
4fc8a852 CS |
328 | if (oi->obuf) |
329 | ospf_fifo_free(oi->obuf); | |
330 | ||
d62a17ae | 331 | assert(oi->state == ISM_Down); |
332 | ||
333 | ospf_opaque_type9_lsa_term(oi); | |
334 | ||
335 | QOBJ_UNREG(oi); | |
336 | ||
337 | /* Free Pseudo Neighbour */ | |
338 | ospf_nbr_delete(oi->nbr_self); | |
718e3744 | 339 | |
d62a17ae | 340 | route_table_finish(oi->nbrs); |
341 | route_table_finish(oi->ls_upd_queue); | |
718e3744 | 342 | |
d62a17ae | 343 | /* Free any lists that should be freed */ |
6a154c88 | 344 | list_delete(&oi->nbr_nbma); |
718e3744 | 345 | |
6a154c88 DL |
346 | list_delete(&oi->ls_ack); |
347 | list_delete(&oi->ls_ack_direct.ls_ack); | |
ae19c240 | 348 | |
b5a8894d CS |
349 | if (IS_DEBUG_OSPF_EVENT) |
350 | zlog_debug("%s: ospf interface %s vrf %s id %u deleted", | |
351 | __PRETTY_FUNCTION__, oi->ifp->name, | |
352 | ospf_vrf_id_to_name(oi->ifp->vrf_id), | |
353 | oi->ifp->vrf_id); | |
354 | ||
d62a17ae | 355 | ospf_delete_from_if(oi->ifp, oi); |
718e3744 | 356 | |
d62a17ae | 357 | listnode_delete(oi->ospf->oiflist, oi); |
358 | listnode_delete(oi->area->oiflist, oi); | |
718e3744 | 359 | |
d62a17ae | 360 | thread_cancel_event(master, oi); |
cfd670f3 | 361 | |
d62a17ae | 362 | memset(oi, 0, sizeof(*oi)); |
363 | XFREE(MTYPE_OSPF_IF, oi); | |
718e3744 | 364 | } |
365 | ||
d62a17ae | 366 | int ospf_if_is_up(struct ospf_interface *oi) |
718e3744 | 367 | { |
d62a17ae | 368 | return if_is_up(oi->ifp); |
718e3744 | 369 | } |
370 | ||
d62a17ae | 371 | struct ospf_interface *ospf_if_exists(struct ospf_interface *oic) |
372 | { | |
373 | struct listnode *node; | |
374 | struct ospf *ospf; | |
375 | struct ospf_interface *oi; | |
2db3d05d | 376 | |
b5a8894d CS |
377 | if (!oic) |
378 | return NULL; | |
379 | ||
380 | ospf = oic->ospf; | |
381 | if (ospf == NULL) | |
d62a17ae | 382 | return NULL; |
2db3d05d | 383 | |
d62a17ae | 384 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) |
385 | if (oi == oic) | |
386 | return oi; | |
1eb8ef25 | 387 | |
d62a17ae | 388 | return NULL; |
2db3d05d | 389 | } |
390 | ||
c81ee5c9 | 391 | /* Lookup OSPF interface by router LSA posistion */ |
d62a17ae | 392 | struct ospf_interface *ospf_if_lookup_by_lsa_pos(struct ospf_area *area, |
393 | int lsa_pos) | |
c81ee5c9 | 394 | { |
d62a17ae | 395 | struct listnode *node; |
396 | struct ospf_interface *oi; | |
c81ee5c9 | 397 | |
d62a17ae | 398 | for (ALL_LIST_ELEMENTS_RO(area->oiflist, node, oi)) { |
399 | if (lsa_pos >= oi->lsa_pos_beg && lsa_pos < oi->lsa_pos_end) | |
400 | return oi; | |
401 | } | |
402 | return NULL; | |
c81ee5c9 JT |
403 | } |
404 | ||
d62a17ae | 405 | struct ospf_interface *ospf_if_lookup_by_local_addr(struct ospf *ospf, |
406 | struct interface *ifp, | |
407 | struct in_addr address) | |
718e3744 | 408 | { |
d62a17ae | 409 | struct listnode *node; |
410 | struct ospf_interface *oi; | |
411 | ||
412 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) | |
413 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
414 | if (ifp && oi->ifp != ifp) | |
415 | continue; | |
416 | ||
417 | if (IPV4_ADDR_SAME(&address, &oi->address->u.prefix4)) | |
418 | return oi; | |
419 | } | |
420 | ||
421 | return NULL; | |
718e3744 | 422 | } |
423 | ||
d62a17ae | 424 | struct ospf_interface *ospf_if_lookup_by_prefix(struct ospf *ospf, |
425 | struct prefix_ipv4 *p) | |
718e3744 | 426 | { |
d62a17ae | 427 | struct listnode *node; |
428 | struct ospf_interface *oi; | |
429 | ||
430 | /* Check each Interface. */ | |
431 | for (ALL_LIST_ELEMENTS_RO(ospf->oiflist, node, oi)) { | |
432 | if (oi->type != OSPF_IFTYPE_VIRTUALLINK) { | |
433 | struct prefix ptmp; | |
434 | ||
435 | prefix_copy(&ptmp, CONNECTED_PREFIX(oi->connected)); | |
436 | apply_mask(&ptmp); | |
437 | if (prefix_same(&ptmp, (struct prefix *)p)) | |
438 | return oi; | |
439 | } | |
68980084 | 440 | } |
d62a17ae | 441 | return NULL; |
718e3744 | 442 | } |
443 | ||
05cf46ba | 444 | /* determine receiving interface by ifp and source address */ |
d62a17ae | 445 | struct ospf_interface *ospf_if_lookup_recv_if(struct ospf *ospf, |
446 | struct in_addr src, | |
447 | struct interface *ifp) | |
718e3744 | 448 | { |
d62a17ae | 449 | struct route_node *rn; |
450 | struct prefix_ipv4 addr; | |
451 | struct ospf_interface *oi, *match; | |
452 | ||
453 | addr.family = AF_INET; | |
454 | addr.prefix = src; | |
455 | addr.prefixlen = IPV4_MAX_BITLEN; | |
456 | ||
457 | match = NULL; | |
458 | ||
459 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
460 | oi = rn->info; | |
461 | ||
462 | if (!oi) /* oi can be NULL for PtP aliases */ | |
463 | continue; | |
464 | ||
465 | if (oi->type == OSPF_IFTYPE_VIRTUALLINK) | |
466 | continue; | |
467 | ||
0c74bbe0 | 468 | if (if_is_loopback(oi->ifp) || if_is_vrf(oi->ifp)) |
d62a17ae | 469 | continue; |
470 | ||
471 | if (CHECK_FLAG(oi->connected->flags, ZEBRA_IFA_UNNUMBERED)) | |
472 | match = oi; | |
473 | else if (prefix_match(CONNECTED_PREFIX(oi->connected), | |
474 | (struct prefix *)&addr)) { | |
9d303b37 DL |
475 | if ((match == NULL) || (match->address->prefixlen |
476 | < oi->address->prefixlen)) | |
d62a17ae | 477 | match = oi; |
478 | } | |
718e3744 | 479 | } |
718e3744 | 480 | |
d62a17ae | 481 | return match; |
718e3744 | 482 | } |
6b0655a2 | 483 | |
85c8ef06 CS |
484 | static void ospf_if_reset_stats(struct ospf_interface *oi) |
485 | { | |
486 | oi->hello_in = oi->hello_out = 0; | |
487 | oi->db_desc_in = oi->db_desc_out = 0; | |
488 | oi->ls_req_in = oi->ls_req_out = 0; | |
489 | oi->ls_upd_in = oi->ls_upd_out = 0; | |
490 | oi->ls_ack_in = oi->ls_ack_out = 0; | |
491 | } | |
492 | ||
d62a17ae | 493 | void ospf_if_stream_set(struct ospf_interface *oi) |
718e3744 | 494 | { |
d62a17ae | 495 | /* set output fifo queue. */ |
496 | if (oi->obuf == NULL) | |
497 | oi->obuf = ospf_fifo_new(); | |
718e3744 | 498 | } |
499 | ||
d62a17ae | 500 | void ospf_if_stream_unset(struct ospf_interface *oi) |
718e3744 | 501 | { |
d62a17ae | 502 | struct ospf *ospf = oi->ospf; |
503 | ||
504 | if (oi->obuf) { | |
4fc8a852 CS |
505 | /* flush the interface packet queue */ |
506 | ospf_fifo_flush(oi->obuf); | |
85c8ef06 CS |
507 | /*reset protocol stats */ |
508 | ospf_if_reset_stats(oi); | |
509 | ||
d62a17ae | 510 | if (oi->on_write_q) { |
511 | listnode_delete(ospf->oi_write_q, oi); | |
512 | if (list_isempty(ospf->oi_write_q)) | |
513 | OSPF_TIMER_OFF(ospf->t_write); | |
514 | oi->on_write_q = 0; | |
515 | } | |
516 | } | |
718e3744 | 517 | } |
68980084 | 518 | |
6b0655a2 | 519 | |
d62a17ae | 520 | static struct ospf_if_params *ospf_new_if_params(void) |
718e3744 | 521 | { |
d62a17ae | 522 | struct ospf_if_params *oip; |
523 | ||
524 | oip = XCALLOC(MTYPE_OSPF_IF_PARAMS, sizeof(struct ospf_if_params)); | |
525 | ||
d62a17ae | 526 | UNSET_IF_PARAM(oip, output_cost_cmd); |
527 | UNSET_IF_PARAM(oip, transmit_delay); | |
528 | UNSET_IF_PARAM(oip, retransmit_interval); | |
529 | UNSET_IF_PARAM(oip, passive_interface); | |
530 | UNSET_IF_PARAM(oip, v_hello); | |
531 | UNSET_IF_PARAM(oip, fast_hello); | |
532 | UNSET_IF_PARAM(oip, v_wait); | |
533 | UNSET_IF_PARAM(oip, priority); | |
534 | UNSET_IF_PARAM(oip, type); | |
535 | UNSET_IF_PARAM(oip, auth_simple); | |
536 | UNSET_IF_PARAM(oip, auth_crypt); | |
537 | UNSET_IF_PARAM(oip, auth_type); | |
538 | ||
539 | oip->auth_crypt = list_new(); | |
540 | ||
541 | oip->network_lsa_seqnum = htonl(OSPF_INITIAL_SEQUENCE_NUMBER); | |
542 | ||
543 | return oip; | |
718e3744 | 544 | } |
545 | ||
d62a17ae | 546 | void ospf_del_if_params(struct ospf_if_params *oip) |
718e3744 | 547 | { |
6a154c88 | 548 | list_delete(&oip->auth_crypt); |
d62a17ae | 549 | bfd_info_free(&(oip->bfd_info)); |
550 | XFREE(MTYPE_OSPF_IF_PARAMS, oip); | |
718e3744 | 551 | } |
552 | ||
d62a17ae | 553 | void ospf_free_if_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 554 | { |
d62a17ae | 555 | struct ospf_if_params *oip; |
556 | struct prefix_ipv4 p; | |
557 | struct route_node *rn; | |
558 | ||
559 | p.family = AF_INET; | |
560 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
561 | p.prefix = addr; | |
562 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
563 | if (!rn || !rn->info) | |
564 | return; | |
565 | ||
566 | oip = rn->info; | |
567 | route_unlock_node(rn); | |
568 | ||
569 | if (!OSPF_IF_PARAM_CONFIGURED(oip, output_cost_cmd) | |
570 | && !OSPF_IF_PARAM_CONFIGURED(oip, transmit_delay) | |
571 | && !OSPF_IF_PARAM_CONFIGURED(oip, retransmit_interval) | |
572 | && !OSPF_IF_PARAM_CONFIGURED(oip, passive_interface) | |
573 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_hello) | |
574 | && !OSPF_IF_PARAM_CONFIGURED(oip, fast_hello) | |
575 | && !OSPF_IF_PARAM_CONFIGURED(oip, v_wait) | |
576 | && !OSPF_IF_PARAM_CONFIGURED(oip, priority) | |
577 | && !OSPF_IF_PARAM_CONFIGURED(oip, type) | |
578 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_simple) | |
579 | && !OSPF_IF_PARAM_CONFIGURED(oip, auth_type) | |
580 | && listcount(oip->auth_crypt) == 0 | |
581 | && ntohl(oip->network_lsa_seqnum) != OSPF_INITIAL_SEQUENCE_NUMBER) { | |
582 | ospf_del_if_params(oip); | |
583 | rn->info = NULL; | |
584 | route_unlock_node(rn); | |
585 | } | |
718e3744 | 586 | } |
587 | ||
d62a17ae | 588 | struct ospf_if_params *ospf_lookup_if_params(struct interface *ifp, |
589 | struct in_addr addr) | |
718e3744 | 590 | { |
d62a17ae | 591 | struct prefix_ipv4 p; |
592 | struct route_node *rn; | |
593 | ||
594 | p.family = AF_INET; | |
595 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
596 | p.prefix = addr; | |
597 | ||
598 | rn = route_node_lookup(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
599 | ||
600 | if (rn) { | |
601 | route_unlock_node(rn); | |
602 | return rn->info; | |
603 | } | |
604 | ||
605 | return NULL; | |
718e3744 | 606 | } |
607 | ||
d62a17ae | 608 | struct ospf_if_params *ospf_get_if_params(struct interface *ifp, |
609 | struct in_addr addr) | |
718e3744 | 610 | { |
d62a17ae | 611 | struct prefix_ipv4 p; |
612 | struct route_node *rn; | |
613 | ||
614 | p.family = AF_INET; | |
615 | p.prefixlen = IPV4_MAX_PREFIXLEN; | |
616 | p.prefix = addr; | |
a6435618 | 617 | apply_mask_ipv4(&p); |
d62a17ae | 618 | |
619 | rn = route_node_get(IF_OIFS_PARAMS(ifp), (struct prefix *)&p); | |
620 | ||
621 | if (rn->info == NULL) | |
622 | rn->info = ospf_new_if_params(); | |
623 | else | |
624 | route_unlock_node(rn); | |
625 | ||
626 | return rn->info; | |
718e3744 | 627 | } |
628 | ||
d62a17ae | 629 | void ospf_if_update_params(struct interface *ifp, struct in_addr addr) |
718e3744 | 630 | { |
d62a17ae | 631 | struct route_node *rn; |
632 | struct ospf_interface *oi; | |
633 | ||
634 | for (rn = route_top(IF_OIFS(ifp)); rn; rn = route_next(rn)) { | |
635 | if ((oi = rn->info) == NULL) | |
636 | continue; | |
637 | ||
638 | if (IPV4_ADDR_SAME(&oi->address->u.prefix4, &addr)) | |
639 | oi->params = ospf_lookup_if_params( | |
640 | ifp, oi->address->u.prefix4); | |
641 | } | |
718e3744 | 642 | } |
643 | ||
d62a17ae | 644 | int ospf_if_new_hook(struct interface *ifp) |
718e3744 | 645 | { |
d62a17ae | 646 | int rc = 0; |
647 | ||
648 | ifp->info = XCALLOC(MTYPE_OSPF_IF_INFO, sizeof(struct ospf_if_info)); | |
649 | ||
650 | IF_OIFS(ifp) = route_table_init(); | |
651 | IF_OIFS_PARAMS(ifp) = route_table_init(); | |
652 | ||
653 | IF_DEF_PARAMS(ifp) = ospf_new_if_params(); | |
654 | ||
655 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), transmit_delay); | |
656 | IF_DEF_PARAMS(ifp)->transmit_delay = OSPF_TRANSMIT_DELAY_DEFAULT; | |
657 | ||
658 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), retransmit_interval); | |
659 | IF_DEF_PARAMS(ifp)->retransmit_interval = | |
660 | OSPF_RETRANSMIT_INTERVAL_DEFAULT; | |
661 | ||
662 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), priority); | |
663 | IF_DEF_PARAMS(ifp)->priority = OSPF_ROUTER_PRIORITY_DEFAULT; | |
664 | ||
665 | IF_DEF_PARAMS(ifp)->mtu_ignore = OSPF_MTU_IGNORE_DEFAULT; | |
666 | ||
667 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_hello); | |
668 | IF_DEF_PARAMS(ifp)->v_hello = OSPF_HELLO_INTERVAL_DEFAULT; | |
669 | ||
670 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), fast_hello); | |
671 | IF_DEF_PARAMS(ifp)->fast_hello = OSPF_FAST_HELLO_DEFAULT; | |
672 | ||
673 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), v_wait); | |
674 | IF_DEF_PARAMS(ifp)->v_wait = OSPF_ROUTER_DEAD_INTERVAL_DEFAULT; | |
675 | ||
676 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_simple); | |
677 | memset(IF_DEF_PARAMS(ifp)->auth_simple, 0, OSPF_AUTH_SIMPLE_SIZE); | |
678 | ||
679 | SET_IF_PARAM(IF_DEF_PARAMS(ifp), auth_type); | |
680 | IF_DEF_PARAMS(ifp)->auth_type = OSPF_AUTH_NOTSET; | |
681 | ||
682 | rc = ospf_opaque_new_if(ifp); | |
683 | return rc; | |
718e3744 | 684 | } |
685 | ||
d62a17ae | 686 | static int ospf_if_delete_hook(struct interface *ifp) |
718e3744 | 687 | { |
d62a17ae | 688 | int rc = 0; |
689 | struct route_node *rn; | |
690 | rc = ospf_opaque_del_if(ifp); | |
940b01aa | 691 | |
d62a17ae | 692 | route_table_finish(IF_OIFS(ifp)); |
940b01aa | 693 | |
d62a17ae | 694 | for (rn = route_top(IF_OIFS_PARAMS(ifp)); rn; rn = route_next(rn)) |
695 | if (rn->info) | |
696 | ospf_del_if_params(rn->info); | |
697 | route_table_finish(IF_OIFS_PARAMS(ifp)); | |
940b01aa | 698 | |
d62a17ae | 699 | ospf_del_if_params((struct ospf_if_params *)IF_DEF_PARAMS(ifp)); |
700 | XFREE(MTYPE_OSPF_IF_INFO, ifp->info); | |
701 | ifp->info = NULL; | |
718e3744 | 702 | |
d62a17ae | 703 | return rc; |
718e3744 | 704 | } |
705 | ||
d62a17ae | 706 | int ospf_if_is_enable(struct ospf_interface *oi) |
718e3744 | 707 | { |
0c74bbe0 | 708 | if (!(if_is_loopback(oi->ifp) || if_is_vrf(oi->ifp))) |
d62a17ae | 709 | if (if_is_up(oi->ifp)) |
710 | return 1; | |
718e3744 | 711 | |
d62a17ae | 712 | return 0; |
718e3744 | 713 | } |
714 | ||
d62a17ae | 715 | void ospf_if_set_multicast(struct ospf_interface *oi) |
ba6454ec | 716 | { |
d62a17ae | 717 | if ((oi->state > ISM_Loopback) && (oi->type != OSPF_IFTYPE_LOOPBACK) |
718 | && (oi->type != OSPF_IFTYPE_VIRTUALLINK) | |
719 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
720 | /* The interface should belong to the OSPF-all-routers group. */ | |
721 | if (!OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS) | |
722 | && (ospf_if_add_allspfrouters(oi->ospf, oi->address, | |
723 | oi->ifp->ifindex) | |
724 | >= 0)) | |
725 | /* Set the flag only if the system call to join | |
726 | * succeeded. */ | |
727 | OI_MEMBER_JOINED(oi, MEMBER_ALLROUTERS); | |
728 | } else { | |
729 | /* The interface should NOT belong to the OSPF-all-routers | |
730 | * group. */ | |
731 | if (OI_MEMBER_CHECK(oi, MEMBER_ALLROUTERS)) { | |
732 | /* Only actually drop if this is the last reference */ | |
733 | if (OI_MEMBER_COUNT(oi, MEMBER_ALLROUTERS) == 1) | |
734 | ospf_if_drop_allspfrouters(oi->ospf, | |
735 | oi->address, | |
736 | oi->ifp->ifindex); | |
737 | /* Unset the flag regardless of whether the system call | |
738 | to leave | |
739 | the group succeeded, since it's much safer to assume | |
740 | that | |
741 | we are not a member. */ | |
742 | OI_MEMBER_LEFT(oi, MEMBER_ALLROUTERS); | |
743 | } | |
744 | } | |
745 | ||
746 | if (((oi->type == OSPF_IFTYPE_BROADCAST) | |
747 | || (oi->type == OSPF_IFTYPE_POINTOPOINT)) | |
748 | && ((oi->state == ISM_DR) || (oi->state == ISM_Backup)) | |
749 | && (OSPF_IF_PASSIVE_STATUS(oi) == OSPF_IF_ACTIVE)) { | |
750 | /* The interface should belong to the OSPF-designated-routers | |
751 | * group. */ | |
752 | if (!OI_MEMBER_CHECK(oi, MEMBER_DROUTERS) | |
753 | && (ospf_if_add_alldrouters(oi->ospf, oi->address, | |
754 | oi->ifp->ifindex) | |
755 | >= 0)) | |
756 | /* Set the flag only if the system call to join | |
757 | * succeeded. */ | |
758 | OI_MEMBER_JOINED(oi, MEMBER_DROUTERS); | |
759 | } else { | |
760 | /* The interface should NOT belong to the | |
761 | * OSPF-designated-routers group */ | |
762 | if (OI_MEMBER_CHECK(oi, MEMBER_DROUTERS)) { | |
763 | /* drop only if last reference */ | |
764 | if (OI_MEMBER_COUNT(oi, MEMBER_DROUTERS) == 1) | |
765 | ospf_if_drop_alldrouters(oi->ospf, oi->address, | |
766 | oi->ifp->ifindex); | |
767 | ||
768 | /* Unset the flag regardless of whether the system call | |
769 | to leave | |
770 | the group succeeded, since it's much safer to assume | |
771 | that | |
772 | we are not a member. */ | |
773 | OI_MEMBER_LEFT(oi, MEMBER_DROUTERS); | |
774 | } | |
775 | } | |
ba6454ec | 776 | } |
777 | ||
d62a17ae | 778 | int ospf_if_up(struct ospf_interface *oi) |
718e3744 | 779 | { |
d62a17ae | 780 | if (oi == NULL) |
781 | return 0; | |
782 | ||
783 | if (oi->type == OSPF_IFTYPE_LOOPBACK) | |
784 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_LoopInd); | |
785 | else { | |
d62a17ae | 786 | OSPF_ISM_EVENT_SCHEDULE(oi, ISM_InterfaceUp); |
787 | } | |
788 | ||
789 | return 1; | |
718e3744 | 790 | } |
791 | ||
d62a17ae | 792 | int ospf_if_down(struct ospf_interface *oi) |
718e3744 | 793 | { |
d62a17ae | 794 | if (oi == NULL) |
795 | return 0; | |
718e3744 | 796 | |
d62a17ae | 797 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); |
798 | /* delete position in router LSA */ | |
799 | oi->lsa_pos_beg = 0; | |
800 | oi->lsa_pos_end = 0; | |
801 | /* Shutdown packet reception and sending */ | |
802 | ospf_if_stream_unset(oi); | |
718e3744 | 803 | |
d62a17ae | 804 | return 1; |
718e3744 | 805 | } |
806 | ||
6b0655a2 | 807 | |
718e3744 | 808 | /* Virtual Link related functions. */ |
809 | ||
d62a17ae | 810 | struct ospf_vl_data *ospf_vl_data_new(struct ospf_area *area, |
811 | struct in_addr vl_peer) | |
718e3744 | 812 | { |
d62a17ae | 813 | struct ospf_vl_data *vl_data; |
718e3744 | 814 | |
d62a17ae | 815 | vl_data = XCALLOC(MTYPE_OSPF_VL_DATA, sizeof(struct ospf_vl_data)); |
718e3744 | 816 | |
d62a17ae | 817 | vl_data->vl_peer.s_addr = vl_peer.s_addr; |
818 | vl_data->vl_area_id = area->area_id; | |
819 | vl_data->vl_area_id_fmt = area->area_id_fmt; | |
718e3744 | 820 | |
d62a17ae | 821 | return vl_data; |
718e3744 | 822 | } |
823 | ||
d62a17ae | 824 | void ospf_vl_data_free(struct ospf_vl_data *vl_data) |
718e3744 | 825 | { |
d62a17ae | 826 | XFREE(MTYPE_OSPF_VL_DATA, vl_data); |
718e3744 | 827 | } |
828 | ||
d7c0a89a | 829 | unsigned int vlink_count = 0; |
718e3744 | 830 | |
d62a17ae | 831 | struct ospf_interface *ospf_vl_new(struct ospf *ospf, |
832 | struct ospf_vl_data *vl_data) | |
718e3744 | 833 | { |
d62a17ae | 834 | struct ospf_interface *voi; |
835 | struct interface *vi; | |
bcc24579 | 836 | char ifname[INTERFACE_NAMSIZ]; |
d62a17ae | 837 | struct ospf_area *area; |
838 | struct in_addr area_id; | |
839 | struct connected *co; | |
840 | struct prefix_ipv4 *p; | |
841 | ||
842 | if (IS_DEBUG_OSPF_EVENT) | |
843 | zlog_debug("ospf_vl_new(): Start"); | |
844 | if (vlink_count == OSPF_VL_MAX_COUNT) { | |
845 | if (IS_DEBUG_OSPF_EVENT) | |
846 | zlog_debug( | |
847 | "ospf_vl_new(): Alarm: " | |
848 | "cannot create more than OSPF_MAX_VL_COUNT virtual links"); | |
849 | return NULL; | |
850 | } | |
851 | ||
852 | if (IS_DEBUG_OSPF_EVENT) | |
996c9314 LB |
853 | zlog_debug( |
854 | "ospf_vl_new(): creating pseudo zebra interface vrf id %u", | |
855 | ospf->vrf_id); | |
d62a17ae | 856 | |
2ec42b85 | 857 | snprintf(ifname, sizeof(ifname), "VLINK%u", vlink_count); |
bcc24579 | 858 | vi = if_create(ifname, ospf->vrf_id); |
d62a17ae | 859 | /* |
860 | * if_create sets ZEBRA_INTERFACE_LINKDETECTION | |
861 | * virtual links don't need this. | |
862 | */ | |
863 | UNSET_FLAG(vi->status, ZEBRA_INTERFACE_LINKDETECTION); | |
864 | co = connected_new(); | |
865 | co->ifp = vi; | |
866 | listnode_add(vi->connected, co); | |
867 | ||
868 | p = prefix_ipv4_new(); | |
869 | p->family = AF_INET; | |
870 | p->prefix.s_addr = 0; | |
871 | p->prefixlen = 0; | |
872 | ||
873 | co->address = (struct prefix *)p; | |
874 | ||
875 | voi = ospf_if_new(ospf, vi, co->address); | |
876 | if (voi == NULL) { | |
877 | if (IS_DEBUG_OSPF_EVENT) | |
878 | zlog_debug( | |
879 | "ospf_vl_new(): Alarm: OSPF int structure is not created"); | |
880 | return NULL; | |
881 | } | |
882 | voi->connected = co; | |
883 | voi->vl_data = vl_data; | |
884 | voi->ifp->mtu = OSPF_VL_MTU; | |
885 | voi->type = OSPF_IFTYPE_VIRTUALLINK; | |
886 | ||
887 | vlink_count++; | |
888 | if (IS_DEBUG_OSPF_EVENT) | |
889 | zlog_debug("ospf_vl_new(): Created name: %s", ifname); | |
890 | if (IS_DEBUG_OSPF_EVENT) | |
891 | zlog_debug("ospf_vl_new(): set if->name to %s", vi->name); | |
892 | ||
893 | area_id.s_addr = 0; | |
894 | area = ospf_area_get(ospf, area_id); | |
895 | voi->area = area; | |
896 | ||
897 | if (IS_DEBUG_OSPF_EVENT) | |
898 | zlog_debug( | |
899 | "ospf_vl_new(): set associated area to the backbone"); | |
900 | ||
901 | /* Add pseudo neighbor. */ | |
902 | ospf_nbr_self_reset(voi, voi->ospf->router_id); | |
903 | ||
904 | ospf_area_add_if(voi->area, voi); | |
905 | ||
906 | ospf_if_stream_set(voi); | |
907 | ||
908 | if (IS_DEBUG_OSPF_EVENT) | |
909 | zlog_debug("ospf_vl_new(): Stop"); | |
910 | return voi; | |
718e3744 | 911 | } |
912 | ||
d62a17ae | 913 | static void ospf_vl_if_delete(struct ospf_vl_data *vl_data) |
718e3744 | 914 | { |
d62a17ae | 915 | struct interface *ifp = vl_data->vl_oi->ifp; |
916 | vl_data->vl_oi->address->u.prefix4.s_addr = 0; | |
917 | vl_data->vl_oi->address->prefixlen = 0; | |
918 | ospf_if_free(vl_data->vl_oi); | |
919 | if_delete(ifp); | |
920 | vlink_count--; | |
718e3744 | 921 | } |
922 | ||
19ce7d5e PG |
923 | /* for a defined area, count the number of configured vl |
924 | */ | |
925 | int ospf_vl_count(struct ospf *ospf, struct ospf_area *area) | |
926 | { | |
927 | int count = 0; | |
928 | struct ospf_vl_data *vl_data; | |
929 | struct listnode *node; | |
930 | ||
931 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { | |
932 | if (area | |
933 | && !IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
934 | continue; | |
935 | count++; | |
936 | } | |
937 | return count; | |
938 | } | |
939 | ||
9c27ef9b PJ |
940 | /* Look up vl_data for given peer, optionally qualified to be in the |
941 | * specified area. NULL area returns first found.. | |
942 | */ | |
d62a17ae | 943 | struct ospf_vl_data *ospf_vl_lookup(struct ospf *ospf, struct ospf_area *area, |
944 | struct in_addr vl_peer) | |
718e3744 | 945 | { |
d62a17ae | 946 | struct ospf_vl_data *vl_data; |
947 | struct listnode *node; | |
948 | ||
949 | if (IS_DEBUG_OSPF_EVENT) { | |
950 | zlog_debug("%s: Looking for %s", __func__, inet_ntoa(vl_peer)); | |
951 | if (area) | |
952 | zlog_debug("%s: in area %s", __func__, | |
953 | inet_ntoa(area->area_id)); | |
954 | } | |
955 | ||
956 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { | |
957 | if (IS_DEBUG_OSPF_EVENT) | |
958 | zlog_debug("%s: VL %s, peer %s", __func__, | |
959 | vl_data->vl_oi->ifp->name, | |
960 | inet_ntoa(vl_data->vl_peer)); | |
961 | ||
962 | if (area | |
963 | && !IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
964 | continue; | |
965 | ||
966 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &vl_peer)) | |
967 | return vl_data; | |
968 | } | |
969 | ||
970 | return NULL; | |
718e3744 | 971 | } |
972 | ||
d62a17ae | 973 | static void ospf_vl_shutdown(struct ospf_vl_data *vl_data) |
718e3744 | 974 | { |
d62a17ae | 975 | struct ospf_interface *oi; |
718e3744 | 976 | |
d62a17ae | 977 | if ((oi = vl_data->vl_oi) == NULL) |
978 | return; | |
718e3744 | 979 | |
d62a17ae | 980 | oi->address->u.prefix4.s_addr = 0; |
981 | oi->address->prefixlen = 0; | |
718e3744 | 982 | |
d62a17ae | 983 | UNSET_FLAG(oi->ifp->flags, IFF_UP); |
984 | /* OSPF_ISM_EVENT_SCHEDULE (oi, ISM_InterfaceDown); */ | |
985 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceDown); | |
718e3744 | 986 | } |
987 | ||
d62a17ae | 988 | void ospf_vl_add(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 989 | { |
d62a17ae | 990 | listnode_add(ospf->vlinks, vl_data); |
991 | hook_call(ospf_vl_add, vl_data); | |
718e3744 | 992 | } |
993 | ||
d62a17ae | 994 | void ospf_vl_delete(struct ospf *ospf, struct ospf_vl_data *vl_data) |
718e3744 | 995 | { |
d62a17ae | 996 | ospf_vl_shutdown(vl_data); |
997 | ospf_vl_if_delete(vl_data); | |
718e3744 | 998 | |
d62a17ae | 999 | hook_call(ospf_vl_delete, vl_data); |
1000 | listnode_delete(ospf->vlinks, vl_data); | |
718e3744 | 1001 | |
d62a17ae | 1002 | ospf_vl_data_free(vl_data); |
718e3744 | 1003 | } |
1004 | ||
d62a17ae | 1005 | static int ospf_vl_set_params(struct ospf_vl_data *vl_data, struct vertex *v) |
718e3744 | 1006 | { |
d62a17ae | 1007 | int changed = 0; |
1008 | struct ospf_interface *voi; | |
1009 | struct listnode *node; | |
1010 | struct vertex_parent *vp = NULL; | |
1011 | unsigned int i; | |
1012 | struct router_lsa *rl; | |
1013 | ||
1014 | voi = vl_data->vl_oi; | |
1015 | ||
1016 | if (voi->output_cost != v->distance) { | |
1017 | ||
1018 | voi->output_cost = v->distance; | |
1019 | changed = 1; | |
1020 | } | |
1021 | ||
1022 | for (ALL_LIST_ELEMENTS_RO(v->parents, node, vp)) { | |
1023 | vl_data->nexthop.oi = vp->nexthop->oi; | |
1024 | vl_data->nexthop.router = vp->nexthop->router; | |
1025 | ||
1026 | if (!IPV4_ADDR_SAME(&voi->address->u.prefix4, | |
1027 | &vl_data->nexthop.oi->address->u.prefix4)) | |
1028 | changed = 1; | |
1029 | ||
1030 | voi->address->u.prefix4 = | |
1031 | vl_data->nexthop.oi->address->u.prefix4; | |
1032 | voi->address->prefixlen = | |
1033 | vl_data->nexthop.oi->address->prefixlen; | |
1034 | ||
1035 | break; /* We take the first interface. */ | |
1036 | } | |
1037 | ||
1038 | rl = (struct router_lsa *)v->lsa; | |
1039 | ||
1040 | /* use SPF determined backlink index in struct vertex | |
1041 | * for virtual link destination address | |
1042 | */ | |
1043 | if (vp && vp->backlink >= 0) { | |
1044 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
1045 | &rl->link[vp->backlink].link_data)) | |
1046 | changed = 1; | |
1047 | vl_data->peer_addr = rl->link[vp->backlink].link_data; | |
1048 | } else { | |
1049 | /* This is highly odd, there is no backlink index | |
1050 | * there should be due to the ospf_spf_has_link() check | |
1051 | * in SPF. Lets warn and try pick a link anyway. | |
1052 | */ | |
266469eb | 1053 | zlog_info("ospf_vl_set_params: No backlink for %s!", |
d62a17ae | 1054 | vl_data->vl_oi->ifp->name); |
1055 | for (i = 0; i < ntohs(rl->links); i++) { | |
1056 | switch (rl->link[i].type) { | |
1057 | case LSA_LINK_TYPE_VIRTUALLINK: | |
1058 | if (IS_DEBUG_OSPF_EVENT) | |
1059 | zlog_debug( | |
1060 | "found back link through VL"); | |
1061 | /* fallthru */ | |
1062 | case LSA_LINK_TYPE_TRANSIT: | |
1063 | case LSA_LINK_TYPE_POINTOPOINT: | |
1064 | if (!IPV4_ADDR_SAME(&vl_data->peer_addr, | |
1065 | &rl->link[i].link_data)) | |
1066 | changed = 1; | |
1067 | vl_data->peer_addr = rl->link[i].link_data; | |
1068 | } | |
1069 | } | |
1070 | } | |
1071 | ||
1072 | if (IS_DEBUG_OSPF_EVENT) | |
1073 | zlog_debug("%s: %s peer address: %s, cost: %d,%schanged", | |
1074 | __func__, vl_data->vl_oi->ifp->name, | |
1075 | inet_ntoa(vl_data->peer_addr), voi->output_cost, | |
1076 | (changed ? " " : " un")); | |
1077 | ||
1078 | return changed; | |
718e3744 | 1079 | } |
1080 | ||
1081 | ||
d62a17ae | 1082 | void ospf_vl_up_check(struct ospf_area *area, struct in_addr rid, |
1083 | struct vertex *v) | |
718e3744 | 1084 | { |
d62a17ae | 1085 | struct ospf *ospf = area->ospf; |
1086 | struct listnode *node; | |
1087 | struct ospf_vl_data *vl_data; | |
1088 | struct ospf_interface *oi; | |
1089 | ||
1090 | if (IS_DEBUG_OSPF_EVENT) { | |
1091 | zlog_debug("ospf_vl_up_check(): Start"); | |
1092 | zlog_debug("ospf_vl_up_check(): Router ID is %s", | |
1093 | inet_ntoa(rid)); | |
1094 | zlog_debug("ospf_vl_up_check(): Area is %s", | |
1095 | inet_ntoa(area->area_id)); | |
718e3744 | 1096 | } |
1097 | ||
d62a17ae | 1098 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) { |
1099 | if (IS_DEBUG_OSPF_EVENT) { | |
1100 | zlog_debug("%s: considering VL, %s in area %s", | |
1101 | __func__, vl_data->vl_oi->ifp->name, | |
1102 | inet_ntoa(vl_data->vl_area_id)); | |
1103 | zlog_debug("%s: peer ID: %s", __func__, | |
1104 | inet_ntoa(vl_data->vl_peer)); | |
1105 | } | |
1106 | ||
1107 | if (IPV4_ADDR_SAME(&vl_data->vl_peer, &rid) | |
1108 | && IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) { | |
1109 | oi = vl_data->vl_oi; | |
1110 | SET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
1111 | ||
1112 | if (IS_DEBUG_OSPF_EVENT) | |
1113 | zlog_debug( | |
1114 | "ospf_vl_up_check(): this VL matched"); | |
1115 | ||
1116 | if (oi->state == ISM_Down) { | |
1117 | if (IS_DEBUG_OSPF_EVENT) | |
1118 | zlog_debug( | |
1119 | "ospf_vl_up_check(): VL is down, waking it up"); | |
1120 | SET_FLAG(oi->ifp->flags, IFF_UP); | |
1121 | OSPF_ISM_EVENT_EXECUTE(oi, ISM_InterfaceUp); | |
1122 | } | |
1123 | ||
1124 | if (ospf_vl_set_params(vl_data, v)) { | |
1125 | if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1126 | zlog_debug( | |
1127 | "ospf_vl_up_check: VL cost change," | |
1128 | " scheduling router lsa refresh"); | |
1129 | if (ospf->backbone) | |
1130 | ospf_router_lsa_update_area( | |
1131 | ospf->backbone); | |
1132 | else if (IS_DEBUG_OSPF(ism, ISM_EVENTS)) | |
1133 | zlog_debug( | |
1134 | "ospf_vl_up_check: VL cost change, no backbone!"); | |
1135 | } | |
1136 | } | |
1137 | } | |
718e3744 | 1138 | } |
1139 | ||
d62a17ae | 1140 | void ospf_vl_unapprove(struct ospf *ospf) |
718e3744 | 1141 | { |
d62a17ae | 1142 | struct listnode *node; |
1143 | struct ospf_vl_data *vl_data; | |
718e3744 | 1144 | |
d62a17ae | 1145 | for (ALL_LIST_ELEMENTS_RO(ospf->vlinks, node, vl_data)) |
1146 | UNSET_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED); | |
718e3744 | 1147 | } |
1148 | ||
d62a17ae | 1149 | void ospf_vl_shut_unapproved(struct ospf *ospf) |
718e3744 | 1150 | { |
d62a17ae | 1151 | struct listnode *node, *nnode; |
1152 | struct ospf_vl_data *vl_data; | |
718e3744 | 1153 | |
d62a17ae | 1154 | for (ALL_LIST_ELEMENTS(ospf->vlinks, node, nnode, vl_data)) |
1155 | if (!CHECK_FLAG(vl_data->flags, OSPF_VL_FLAG_APPROVED)) | |
1156 | ospf_vl_shutdown(vl_data); | |
718e3744 | 1157 | } |
1158 | ||
d62a17ae | 1159 | int ospf_full_virtual_nbrs(struct ospf_area *area) |
718e3744 | 1160 | { |
d62a17ae | 1161 | if (IS_DEBUG_OSPF_EVENT) { |
1162 | zlog_debug( | |
1163 | "counting fully adjacent virtual neighbors in area %s", | |
1164 | inet_ntoa(area->area_id)); | |
1165 | zlog_debug("there are %d of them", area->full_vls); | |
1166 | } | |
1167 | ||
1168 | return area->full_vls; | |
718e3744 | 1169 | } |
1170 | ||
d62a17ae | 1171 | int ospf_vls_in_area(struct ospf_area *area) |
718e3744 | 1172 | { |
d62a17ae | 1173 | struct listnode *node; |
1174 | struct ospf_vl_data *vl_data; | |
1175 | int c = 0; | |
718e3744 | 1176 | |
d62a17ae | 1177 | for (ALL_LIST_ELEMENTS_RO(area->ospf->vlinks, node, vl_data)) |
1178 | if (IPV4_ADDR_SAME(&vl_data->vl_area_id, &area->area_id)) | |
1179 | c++; | |
718e3744 | 1180 | |
d62a17ae | 1181 | return c; |
718e3744 | 1182 | } |
1183 | ||
6b0655a2 | 1184 | |
d62a17ae | 1185 | struct crypt_key *ospf_crypt_key_new() |
718e3744 | 1186 | { |
d62a17ae | 1187 | return XCALLOC(MTYPE_OSPF_CRYPT_KEY, sizeof(struct crypt_key)); |
718e3744 | 1188 | } |
1189 | ||
d62a17ae | 1190 | void ospf_crypt_key_add(struct list *crypt, struct crypt_key *ck) |
718e3744 | 1191 | { |
d62a17ae | 1192 | listnode_add(crypt, ck); |
718e3744 | 1193 | } |
1194 | ||
d7c0a89a | 1195 | struct crypt_key *ospf_crypt_key_lookup(struct list *auth_crypt, uint8_t key_id) |
718e3744 | 1196 | { |
d62a17ae | 1197 | struct listnode *node; |
1198 | struct crypt_key *ck; | |
718e3744 | 1199 | |
d62a17ae | 1200 | for (ALL_LIST_ELEMENTS_RO(auth_crypt, node, ck)) |
1201 | if (ck->key_id == key_id) | |
1202 | return ck; | |
718e3744 | 1203 | |
d62a17ae | 1204 | return NULL; |
718e3744 | 1205 | } |
1206 | ||
d7c0a89a | 1207 | int ospf_crypt_key_delete(struct list *auth_crypt, uint8_t key_id) |
718e3744 | 1208 | { |
d62a17ae | 1209 | struct listnode *node, *nnode; |
1210 | struct crypt_key *ck; | |
1211 | ||
1212 | for (ALL_LIST_ELEMENTS(auth_crypt, node, nnode, ck)) { | |
1213 | if (ck->key_id == key_id) { | |
1214 | listnode_delete(auth_crypt, ck); | |
1215 | XFREE(MTYPE_OSPF_CRYPT_KEY, ck); | |
1216 | return 1; | |
1217 | } | |
1218 | } | |
1219 | ||
1220 | return 0; | |
718e3744 | 1221 | } |
1222 | ||
d7c0a89a | 1223 | uint8_t ospf_default_iftype(struct interface *ifp) |
bc18d616 | 1224 | { |
d62a17ae | 1225 | if (if_is_pointopoint(ifp)) |
1226 | return OSPF_IFTYPE_POINTOPOINT; | |
0c74bbe0 | 1227 | else if (if_is_loopback(ifp) || if_is_vrf(ifp)) |
d62a17ae | 1228 | return OSPF_IFTYPE_LOOPBACK; |
1229 | else | |
1230 | return OSPF_IFTYPE_BROADCAST; | |
bc18d616 | 1231 | } |
1232 | ||
d62a17ae | 1233 | void ospf_if_init() |
718e3744 | 1234 | { |
d62a17ae | 1235 | /* Initialize Zebra interface data structure. */ |
ce19a04a DL |
1236 | hook_register_prio(if_add, 0, ospf_if_new_hook); |
1237 | hook_register_prio(if_del, 0, ospf_if_delete_hook); | |
718e3744 | 1238 | } |